The loss of anterior scutellar macrochaetae that is seen in Appld flies is partially suppressed by APP-BP1Ex62/+. The loss of posterior scutellar macrochaetae that is seen in Appld flies is not suppressed by APP-BP1Ex62/+.

Expression of one copy of ApplScer\UAS.cTa under the control of Scer\GAL4ap-md544 in a APP-BP1Ex62/+ background results in loss of thoracic microchaetae and a reduction in scutellum size. This phenotype is more severe at 29[o]C than at 25[o]C.